niobium

Niobium

Property	Value
Element Name	Niobium
Symbol	Nb
Atomic Number	41
Atomic Mass	92.906 g/mol
Density	8.57 g/cm³
Melting Point	2,468 °C (4,474 °F)
Boiling Point	4,927 °C (8,901 °F)
Appearance	Silvery-gray metallic
Crystal Structure	Body-centered cubic (BCC)
Thermal Conductivity	53.7 W/m·K
Electrical Resistivity	15.2 nΩ·m at 20 °C
Mohs Hardness	6
Young's Modulus	105 GPa
Poisson's Ratio	0.4
Magnetic Ordering	Paramagnetic
Heat of Fusion	26.8 kJ/mol
Heat of Vaporization	689.9 kJ/mol
Thermal Expansion	7.3 µm/(m·K) at 25 °C

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